Crankshaft part of the 'loads and stores to global vars through property cell shortcuts' feature.

src/x64/lithium-x64.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_X64_LITHIUM_X64_H_
 #define V8_X64_LITHIUM_X64_H_
 
 #include "src/hydrogen.h"
 #include "src/lithium.h"
 #include "src/lithium-allocator.h"
@@ skipping 84 matching lines @@
   V(IsStringAndBranch)                       \
   V(IsSmiAndBranch)                          \
   V(IsUndetectableAndBranch)                 \
   V(Label)                                   \
   V(LazyBailout)                             \
   V(LoadContextSlot)                         \
   V(LoadRoot)                                \
   V(LoadFieldByIndex)                        \
   V(LoadFunctionPrototype)                   \
   V(LoadGlobalGeneric)                       \
+  V(LoadGlobalViaContext)                    \
   V(LoadKeyed)                               \
   V(LoadKeyedGeneric)                        \
   V(LoadNamedField)                          \
   V(LoadNamedGeneric)                        \
   V(MapEnumLength)                           \
   V(MathAbs)                                 \
   V(MathClz32)                               \
   V(MathExp)                                 \
   V(MathFloor)                               \
   V(MathFround)                              \
@@ skipping 19 matching lines @@
   V(Return)                                  \
   V(SeqStringGetChar)                        \
   V(SeqStringSetChar)                        \
   V(ShiftI)                                  \
   V(SmiTag)                                  \
   V(SmiUntag)                                \
   V(StackCheck)                              \
   V(StoreCodeEntry)                          \
   V(StoreContextSlot)                        \
   V(StoreFrameContext)                       \
+  V(StoreGlobalViaContext)                   \
   V(StoreKeyed)                              \
   V(StoreKeyedGeneric)                       \
   V(StoreNamedField)                         \
   V(StoreNamedGeneric)                       \
   V(StringAdd)                               \
   V(StringCharCodeAt)                        \
   V(StringCharFromCode)                      \
   V(StringCompareAndBranch)                  \
   V(SubI)                                    \
   V(TaggedToI)                               \
@@ skipping 1533 matching lines @@
 
   LOperand* context() { return inputs_[0]; }
   LOperand* global_object() { return inputs_[1]; }
   LOperand* temp_vector() { return temps_[0]; }
 
   Handle<Object> name() const { return hydrogen()->name(); }
   TypeofMode typeof_mode() const { return hydrogen()->typeof_mode(); }
 };
 
 
+class LLoadGlobalViaContext final : public LTemplateInstruction<1, 1, 1> {
+ public:
+  explicit LLoadGlobalViaContext(LOperand* context) { inputs_[0] = context; }
+
+  DECLARE_CONCRETE_INSTRUCTION(LoadGlobalViaContext, "load-global-via-context")
+  DECLARE_HYDROGEN_ACCESSOR(LoadGlobalViaContext)
+
+  void PrintDataTo(StringStream* stream) override;
+
+  LOperand* context() { return inputs_[0]; }
+
+  Handle<Object> name() const { return hydrogen()->name(); }
+  int depth() const { return hydrogen()->depth(); }
+  int slot_index() const { return hydrogen()->slot_index(); }
+};
+
+
 class LLoadContextSlot final : public LTemplateInstruction<1, 1, 0> {
  public:
   explicit LLoadContextSlot(LOperand* context) {
     inputs_[0] = context;
   }
 
   LOperand* context() { return inputs_[0]; }
 
   DECLARE_CONCRETE_INSTRUCTION(LoadContextSlot, "load-context-slot")
   DECLARE_HYDROGEN_ACCESSOR(LoadContextSlot)
@@ skipping 471 matching lines @@
   DECLARE_CONCRETE_INSTRUCTION(StoreNamedGeneric, "store-named-generic")
   DECLARE_HYDROGEN_ACCESSOR(StoreNamedGeneric)
 
   void PrintDataTo(StringStream* stream) override;
 
   Handle<Object> name() const { return hydrogen()->name(); }
   LanguageMode language_mode() { return hydrogen()->language_mode(); }
 };
 
 
+class LStoreGlobalViaContext final : public LTemplateInstruction<0, 2, 0> {
+ public:
+  LStoreGlobalViaContext(LOperand* context, LOperand* value) {
+    inputs_[0] = context;
+    inputs_[1] = value;
+  }
+
+  LOperand* context() { return inputs_[0]; }
+  LOperand* value() { return inputs_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(StoreGlobalViaContext,
+                               "store-global-via-context")
+  DECLARE_HYDROGEN_ACCESSOR(StoreGlobalViaContext)
+
+  void PrintDataTo(StringStream* stream) override;
+
+  Handle<Object> name() const { return hydrogen()->name(); }
+  int depth() { return hydrogen()->depth(); }
+  int slot_index() { return hydrogen()->slot_index(); }
+  LanguageMode language_mode() { return hydrogen()->language_mode(); }
+};
+
+
 class LStoreKeyed final : public LTemplateInstruction<0, 3, 0> {
  public:
   LStoreKeyed(LOperand* object, LOperand* key, LOperand* value) {
     inputs_[0] = object;
     inputs_[1] = key;
     inputs_[2] = value;
   }
 
   bool is_external() const { return hydrogen()->is_external(); }
   bool is_fixed_typed_array() const {
@@ skipping 675 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(LChunkBuilder);
 };
 
 #undef DECLARE_HYDROGEN_ACCESSOR
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::int
 
 #endif  // V8_X64_LITHIUM_X64_H_